package own.stu.jobgib.playown.netty.ch6.client;

import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.socket.SocketChannel;
import io.netty.handler.codec.LengthFieldBasedFrameDecoder;
import io.netty.handler.codec.LengthFieldPrepender;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;
import io.netty.util.CharsetUtil;

public class MyClientInitializer extends ChannelInitializer<SocketChannel> {
    @Override
    protected void initChannel(SocketChannel ch) throws Exception {
        ChannelPipeline pipeline = ch.pipeline();
        //(1) 加入拆包器
        pipeline.addLast(new LengthFieldBasedFrameDecoder(Integer.MAX_VALUE,0,4,0,4));
        //(2) 加入粘包器
        pipeline.addLast(new LengthFieldPrepender(4));
        //字符串解码 (3)
        pipeline.addLast(new StringDecoder(CharsetUtil.UTF_8));
        //字符串编码 (4)
        pipeline.addLast(new StringEncoder(CharsetUtil.UTF_8));
        //(5)
        pipeline.addLast(new MyClientHandler());
    }
}